Universal AC Input High-Density Power Adapter Design With a Clamped Series-Resonant Converter

Ramabhadran, Ramanujam; She, Xu; Levy, Yehuda; Glaser, John; Raju, Ravisekhar; Datta, Rajib

doi:10.1109/tia.2016.2564944

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…Let's assume that the switch's duty ratio in boost converter mode is d 1 and that it is d 2 in buck converter mode. The BCBB converter's total gain (M 1 ) is a result of the cascaded structure of two converters (boost, buck), as shown in (1).…”

Section: Operation Of the Buck-boost Convertermentioning

confidence: 99%

“…Portable AC‐DC power converters are widely used in all battery‐operated applications to prolong their life with instant charge. These power transfer modules collect electricity from the incoming power grid and deliver it to the output 1 . Nevertheless, harmonics of the grid source current must meet the IEC and EN 6100‐3‐2 class D standards 2 .…”

Section: Introductionmentioning

confidence: 99%

“…17 The ripple power acquired in a single-phase AC-DC conversion can be diverted using an external capacitor through a power decoupling circuit. As the energy (E) stored in a capacitor (C) is E ¼ 1 2 CV 2 , it indicates that permitting a higher voltage (V) across the capacitor needs only a small capacitance to store a considerable amount of ripple energy. 18 A bulky electrolytic capacitor is constraint in boost operated PFC, but is required to buffer the twice the fundamental frequency component and is been preferred in converter topologies.…”

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confidence: 99%

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A quasi‐two‐switch power factor correction converter for on‐board battery chargers

Anand

Praneeth

Yalla

et al. 2023

Circuit Theory & Apps

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SummaryThis paper describes a quasi‐two‐switch buck‐boost power factor correction (PFC) converter for use in on‐board battery chargers to create a variable output voltage that is less than or greater than the peak input voltage. A two‐stage converter links the input grid power to the battery pack both in battery‐operated electric cars (BEVs) and plug‐in hybrid electric vehicles (PHEVs), with battery pack voltages ranging from 100 to 500 V depending on vehicle size and capacity. A universal charger that can manage such a wide range of battery pack voltages is appropriate for all vehicle designs. This requirement is met by supplying a changeable DC link voltage at the input of the DC/DC converter, which is a major obstacle in battery chargers when it comes to achieving universal output voltages. The major contribution of this research is the analysis and design of a dual‐control technique for a cascaded buck‐boost converter suited for a power factor correction (PFC) rectifier. The control loop is designed to allow a seamless transition from buck‐boost operation while putting less stress on the devices. The converter's power loss and small‐signal model are also investigated. From an economic standpoint, this concept allows the automobile industry to manufacture a single power converter, which is flexible and capable of charging numerous vehicle variants. Results have been verified both with a PSIM (11.0) simulation model and an experimental setup for a 1‐kW PFC converter suitable for universal input voltages of 85–265 Vrms and broad output voltages.

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Section: Operation Of the Buck-boost Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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A quasi‐two‐switch power factor correction converter for on‐board battery chargers

Anand

Praneeth

Yalla

et al. 2023

Circuit Theory & Apps

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“…In power electronics technology, as highly efficient and clean carriers of power conversion [1][2][3], voltage source inverters have gradually penetrated into various fields such as power adapter, rail transit, and solar/wind power generation [4][5][6][7]. Simultaneously, the emergence of pulse width modulation (PWM) technology promotes the development of frequency conversion control technology.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Electromagnetic Interference for Permanent Magnet Synchronous Motor Using Random PWM Switching Method Based on Four-Switch Three-Phase Inverters

Guo

Wang

et al. 2020

Electronics

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The four-switch three-phase inverters have become an effective approach for fault-tolerant reconstruction and operation of the six-switch three-phase topology. However, the conventional control strategy for four-switch three-phase inverters can result in a large number of current harmonic components, high electromagnetic acoustic noise, and electromagnetic interference (EMI). Therefore, this paper proposes a random switching frequency pulse width modulation method under the centrosymmetry period with a two-state Markov chain based on four-switch three-phase inverters (RSFPWM-CPTMC). In this method, random numbers are optimized and evenly distributed on both sides of the center frequency within a specific frequency bandwidth range, which significantly reduces the current harmonics and EMI at the switching frequency and frequency multiplication. The spectral characteristics generated by the random switching frequency under the centrosymmetry period with the two-state Markov chain are evaluated and compared to that provided by the traditional fixed switching frequency pulse width modulation (FSFPWM). Simulations and experiments are carried out to illustrate the superiority of the proposal.

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High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

Zhu

Ikari

Lovison

et al. 2021

IET Power Electronics

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This paper presents a single-switch zero-voltage switching (ZVS) power-factor correction converter based on the class-E 2 converter at 1 MHz switching frequency. A design method for ensuring the ZVS for the entire line-voltage period is proposed. By visualising the ZVS region in the parameter space, circuit parameters can be easily obtained to achieve the ZVS for the entire line-voltage period. Additionally, a closed-loop controller is applied for achieving a high power factor, low total harmonic distortion of the input current and output voltage regulation. The experimental circuit achieved the ZVS in the entire line-voltage period against load variations. As a result, the implemented converter achieved the same level of power-conversion efficiency as the 100-kHz power-factor correction converters and a high power factor with low total harmonic distortion, which denoted the effectiveness of the proposed design method. INTRODUCTIONAC-DC power supplies with power factor correction (PFC) are used in a wide range of applications. The applications of AC-DC converters include battery charger [1-6], light-emitting diode (LED) lighting [7-16], electric vehicle (EV) [17, 18] and laptop computer [19, 20]. A two-stage PFC power converter [1, 2, 21-24] is a series connection of an AC-DC converter for correcting PF and a DC-DC one for regulating the output voltage. The two-stage AC-DC converter requires at least two power switches and two individual controllers, which leads to a high cost and a large volume. On the other hand, a single-stage AC-DC converter combines the PFC stage and the voltageregulating one into a single converter [3-16, 20, 24-31]. Therefore, single-stage converters have a small component number and achieve low costs compared with two-stage converters, and are often applied for space-constrained applications such as battery chargers [3-6]. Traditional converter topologies, such as boost [11, 12], buck [13], buck-boost [13, 14], and Flyback converters [9, 10],This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Universal AC Input High-Density Power Adapter Design With a Clamped Series-Resonant Converter

Cited by 18 publications

References 10 publications

A quasi‐two‐switch power factor correction converter for on‐board battery chargers

A quasi‐two‐switch power factor correction converter for on‐board battery chargers

Reduction of Electromagnetic Interference for Permanent Magnet Synchronous Motor Using Random PWM Switching Method Based on Four-Switch Three-Phase Inverters

High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

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